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Video filters alter the video. Of course they can only have effect if the video is not in copy mode (Copy means “do not change the video”), so the first thing you have to do is select a video encoder (something else than the default “Copy” option for video). Then, in the main window, clicking the Filters button opens the Video Filter Manager dialog where you can add filters.
If video has a selected encoder other than Copy, the processing chain is:
Filters are split into several categories:
A meta filter is a group or modification of other filters. Here are some of them:
This meta filter alters another filter so that it only applies on a part of the video. For example, you may want to deinterlace only a part of the video. To do so, create a Deinterlace filter, select it and press the Partial button. Enter the start/end frame.